Which of the following is given as a gift in Japan?
Hyalonema
Tethya
Euplectalla
Pheronetna
Correct Answer :
C. Euplectalla
Related Questions
Canal system in Leucosolenia is
asconoid
syconoid
leuconoid
rhagon
Animals of phylum porifera are characterised by
diploblastic organisation
coelenteron
canal system
coelom
If a carmine particle is put on the os~ culum of a living sponge, it will
adhere
rotate
be ingested
none of these
Exogenous budding, a type of asexual reproduction in sponges is known as
gemmulation
gemmation
regeneration
amphimixis
Sponges capture their food by
choanocytes
porocytes
amoebocytes
pinacocytes
Difference between a sponge and a metazoan is that sponge do not contain
cells
cell organisation
cell division
division of labour
The commercial bath sponge belongs to
porifera
gatropoda
coelenterata
ctenophora
Which of the following statements is true of sponges ?
One mouth and innumerable exits
Mouth serves for both, ingestion and egestion
Innumerable mouths and one exit
The body encloses a single cavity the coeienteron
Choanocytes in sponges are present
on the external body surface
line the gastric cavity
located between the outer and inner layers
in the mesodermal layer
The most common composition of skeleton in sponges is :
Cartilage
Mesenchyma
Spicules and spongin fibres
Myonemes
Which of the following is given as a gift in Japan?
Hyalonema
Tethya
Euplectalla
Pheronetna
Path of water in a sponge is
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel
Larva of sponge is known as
planula larva
amphiblastula larva
trochophore larva
glochidium larva
What is Euplectella commonly called ?
Glass rope sponge
Venus flower basket
Boring sponge
Commercial bath sponge
Nervous system in sponges
is well developed
is in the form of a network
is made up of several interconnected ganglia
is absent
The only fresh water species of sponges is
Scypha
Euspcmgia
Spongilla
None of these
Gemmules are helpful in
digestion
sexual reproduction
asexual reproduction
current circulation
Sponges capture their food by
pinacocytes
thesocytes
choamocytes
scleroblasts
The skeleton of sponges is mostly composed of
choanocytes
scleroblasts
pinacocytes
amoebocytes
A chamber which is common in different types of canal system:
Radial canal
Inhalant canal
Spongocoel
None of these
The pathway of entring and coming out of water of sponges is
water vascular system
canal system
feeding current
circulating current
Asexual reproduction in sponges is by forming buds and
gemmules
spicules
spongin fibres
choanocytes
Cells that aid in locomotion of a sponge are
porocytes
myocytes
choanocytes
none of these
A sponge is a
coelomata
acoelomata
metacoelomata
pseudocoelomates
Which is not a larva of sponge?
Planula
Stomogastrula
Amphiblastula
Terogastrula
In leucosolenia, the scleroblasts perform the function of
absorption of food material
excretion
reproduction
formation of spicules
The canal system in sponges does not serve the function of
nutrition
respiration
excretion
sexual reproduction
The animal nature of sponges was established by
Robert Grant
Trembly
Robert Brown
Ellias
Lencosolenia is
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
The commercial bath sponge is made up of
siliceous spicules
spongin fibres
collagen fibres
elastic fibres